1  /*
       2   * Check decoding of request_key syscall.
       3   *
       4   * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
       5   * Copyright (c) 2016-2021 The strace developers.
       6   * All rights reserved.
       7   *
       8   * SPDX-License-Identifier: GPL-2.0-or-later
       9   */
      10  
      11  #include "tests.h"
      12  #include "scno.h"
      13  
      14  #include <inttypes.h>
      15  #include <stdio.h>
      16  #include <unistd.h>
      17  
      18  static void
      19  print_val_str(const void *ptr, const char *str)
      20  {
      21  	if (str)
      22  		printf("%s, ", str);
      23  	else
      24  		printf("%p, ", ptr);
      25  }
      26  
      27  static void
      28  do_request_key(const char *type, const char *type_str, const char *desc,
      29  	const char *desc_str, const char *info, const char *info_str,
      30  	int32_t keyring, const char *keyring_str)
      31  {
      32  	long rc = syscall(__NR_request_key, type, desc, info, keyring);
      33  	const char *errstr = sprintrc(rc);
      34  	printf("request_key(");
      35  	print_val_str(type, type_str);
      36  	print_val_str(desc, desc_str);
      37  	print_val_str(info, info_str);
      38  	if (keyring_str)
      39  		printf("%s", keyring_str);
      40  	else
      41  		printf("%d", keyring);
      42  	printf(") = %s\n", errstr);
      43  }
      44  
      45  int
      46  main(void)
      47  {
      48  	static const char unterminated1[] = { '\1', '\2', '\3', '\4', '\5' };
      49  	static const char unterminated2[] = { '\6', '\7', '\10', '\11', '\12' };
      50  	static const char unterminated3[] = { '\16', '\17', '\20', '\21', '\22' };
      51  
      52  	char *bogus_type = tail_memdup(unterminated1, sizeof(unterminated1));
      53  	char *bogus_desc = tail_memdup(unterminated2, sizeof(unterminated2));
      54  	char *bogus_info = tail_memdup(unterminated3, sizeof(unterminated3));
      55  
      56  	struct {
      57  		const char *type;
      58  		const char *str;
      59  	} types[] = {
      60  		{ ARG_STR(NULL) },
      61  		{ bogus_type + sizeof(unterminated1), NULL },
      62  		{ bogus_type, NULL },
      63  		{ ARG_STR("\20\21\22\23\24") },
      64  		{ ARG_STR("user") },
      65  	};
      66  
      67  	struct {
      68  		const char *desc;
      69  		const char *str;
      70  	} descs[] = {
      71  		{ ARG_STR(NULL) },
      72  		{ bogus_desc + sizeof(unterminated2), NULL },
      73  		{ bogus_desc, NULL },
      74  		{ ARG_STR("\25\26\27\30\31") },
      75  		{ ARG_STR("desc") },
      76  		{ "overly long description", STRINGIFY("overly long ") "..." },
      77  	};
      78  
      79  	struct {
      80  		const char *info;
      81  		const char *str;
      82  	} infos[] = {
      83  		{ ARG_STR(NULL) },
      84  		{ bogus_info + sizeof(unterminated3), NULL },
      85  		{ bogus_info, NULL },
      86  		{ ARG_STR("\32\33\34\35\36") },
      87  		{ ARG_STR("info") },
      88  		{ "overly long info", STRINGIFY("overly long ") "..." },
      89  	};
      90  
      91  	struct {
      92  		uint32_t keyring;
      93  		const char *str;
      94  	} keyrings[] = {
      95  		{ ARG_STR(0) },
      96  		{ ARG_STR(1234567890) },
      97  		{ ARG_STR(-1234567890) },
      98  		{ -1, "KEY_SPEC_THREAD_KEYRING" },
      99  	};
     100  
     101  	for (unsigned int i = 0;
     102  	     i < ARRAY_SIZE(types); ++i)
     103  		for (unsigned int j = 0;
     104  		     j < ARRAY_SIZE(descs); ++j)
     105  			for (unsigned int k = 0;
     106  			     k < ARRAY_SIZE(infos); ++k)
     107  				for (unsigned int l = 0;
     108  				     l < ARRAY_SIZE(keyrings); ++l)
     109  					do_request_key(
     110  						types[i].type, types[i].str,
     111  						descs[j].desc, descs[j].str,
     112  						infos[k].info, infos[k].str,
     113  						keyrings[l].keyring,
     114  						keyrings[l].str);
     115  
     116  	puts("+++ exited with 0 +++");
     117  
     118  	return 0;
     119  }